D-3153-20 Johnson Controls Damper Actuator

Overview

The Johnson Controls D-3153-20 is a heavy-duty pneumatic damper actuator designed for precise and reliable positioning of ventilating dampers in commercial HVAC and building automation systems. Driven by a 0 to 20 psig control air signal, this linear piston-type actuator converts pneumatic pressure into mechanical force to modulate airflow or execute fail-safe safety damper functions under varying load conditions.

Features

• Housed in a lightweight, non-combustible die-cast aluminum body for superior durability.
• Features a large 15-square-inch synthetic elastomer diaphragm for high force output.
• Equipped with a 2-way swivel connection on the cylinder head and telescoping linkage to ensure smooth, non-binding movement.
• Provides a reliable spring-return mechanism to safely return the damper to its normal position upon loss of air pressure.
• Includes an auxiliary mounting bracket package with a pedestal-style bracket and crank arm linkage for versatile field installation.

Specifications

• Model: D-3153-20
• Actuator Type: Pneumatic Piston Damper Actuator
• Nominal Spring Range: 8 to 13 psi (56 to 91 kPa)
• Stroke: 3 inches (76 mm)
• Effective Diaphragm Area: 15 sq. in. (97 sq. cm)
• Control Air Pressure: 0-20 psig (0-138 kPa) for normal HVAC operation; 20 psig minimum for safety functions; 30 psig maximum
• Air Connection: 1/8-inch NPT straight barbed fitting
• Body Material: Die-cast aluminum
• Diaphragm Material: Synthetic elastomer
• Operating Temperature Range: -20°F to 150°F (-29°C to 66°C)

Applications

The D-3153-20 is ideal for regulating commercial HVAC ventilating dampers, air handling units, VAV terminals, and economizers. It can drive dampers up to a maximum area of 16 square feet for proportional volume control and up to 25 square feet for two-position (on/off) actuation, provided torque requirements are compatible. It serves as an effective solution for original equipment installations or field actuator conversions on allied manufacturer systems.